Chemistry 5070 · O Level
Ion and ionic bonds
80 practice questions on Ion and ionic bonds, with worked solutions and instant marking.
What is observed when sodium chloride melts?
May/June 2015
Which compound yields the largest number of ions when 1 mole is dissolved in water?
May/June 2015
What occurs when sodium chloride is melted?
May/June 2015
When Group I metals combine with Group VII halogens, compounds are produced. These compounds are ……1…… in water and contain ……2…… bonds. Which words correctly fill gaps 1 and 2?
May/June 2016
For a compound with oxygen to be formed, an atom of a Group II element must
May/June 2016
Compound Z consists of element X and element Y. It conducts electricity well when it is molten, but it does not conduct when it is solid. Which statement is correct?
May/June 2016
M is a compound that consists of two ions.
May/June 2016
Which substance, when in the molten state, is able to conduct electricity?
May/June 2017
An atom of the element E produces a white oxide with formula $EO$. Which element is E?
May/June 2017
Which of the following statements about the particles $^{19}_{9}\text{F}^-$, $^{20}_{10}\text{Ne}$ and $^{23}_{11}\text{Na}^+$ is correct?
May/June 2017
The table presents some properties of four substances. Which one is an ionic compound?
May/June 2017
50.0 cm$^3$ of 0.10 mol dm$^{-3}$ silver nitrate, $\text{AgNO}_3$, is poured into 150.0 cm$^3$ of 0.05 mol dm$^{-3}$ sodium chloride, $\text{NaCl}$, in a beaker. Besides solid silver chloride, what else is in the beaker after the reaction?
May/June 2017
Which of the following statements about ionic compounds is correct?
May/June 2018
Which of the following statements about solid calcium chloride is correct?
May/June 2018
Powdered calcium carbonate is reacted with dilute hydrochloric acid to form calcium chloride, water and carbon dioxide. Which ionic equation, complete with state symbols, is correct for this reaction?
May/June 2019
In aqueous copper(II) sulfate, which negative ions are present?
May/June 2019
Which diagram represents the outer electron arrangement in calcium fluoride?
May/June 2019
Element X has atomic number 12. What formula represents the chloride of X?
May/June 2019
Which diagram shows the arrangement of outer electrons in calcium fluoride?
May/June 2019
Which cations are found in aqueous copper(II) sulfate?
May/June 2021
Elements X and Y react together to make an ionic compound. Atoms of X contain more protons than atoms of Y. Atoms of Y contain more valence electrons than atoms of X. Which statement is correct?
May/June 2021
The diagrams illustrate the structures of two solids, P and Q. Which row is correct?
May/June 2021
What positive ions are contained in aqueous copper(II) sulfate?
May/June 2021
Copper(II) chloride, copper(II) iodide and copper(II) carbonate are all ionic compounds.
May/June 2021
Both zinc bromide and zinc carbonate are ionic compounds.
May/June 2021
Compound X is sodium iodide, $\text{NaI}$. Compound Y is methyl methanoate, $\text{HCO}_2\text{CH}_3$. Under room temperature and pressure, ........1........ solid. In aqueous solution, ........2........ electricity. Which words complete gaps 1 and 2 correctly?
May/June 2022
Which statement concerning ionic compounds is correct?
May/June 2022
The table gives information about several particles.
May/June 2022
The table presents information about a few particles.
May/June 2022
Several statements concerning the bonding in magnesium chloride are given below. Which statements are correct?
May/June 2023
Which anions are present in salts that are always soluble in water?
May/June 2023
Element X and element Y combine to make a compound. The electronic configurations for X and Y are X = $2,8,3$ and Y = $2,6$. Which row indicates the electron transfer that occurs and the kind of compound produced?
May/June 2023
This question focuses on compounds that include phosphorus.
May/June 2023
This question focuses on compounds made from magnesium and nitrogen.
May/June 2023
Potassium iodide, KI, is an ionic solid made up of a lattice containing potassium ions and iodide ions.
May/June 2024
Calcium bromide, $\text{CaBr}_2$, is an ionic solid made up of a lattice containing calcium ions and bromide ions.
May/June 2024
Which statement concerning solid calcium chloride is correct?
May/June 2025
The ions $\text{Ca}^{2+}$ and $\text{PO}_4^{3-}$ join together to make an ionic compound. What formula does the compound have?
May/June 2025
Which of the following statements about magnesium oxide is correct?
May/June 2025
In the ionic solid zinc phosphide, $\text{Zn}_3\text{P}_2$, what formula does the phosphide ion have?
Oct/Nov 2015
Which positive ions are found in aqueous copper(II) sulfate?
Oct/Nov 2015
In what way is a calcium ion, $\text{Ca}^{2+}$, produced from a calcium atom?
Oct/Nov 2015
Which substance, when mixed with pure water, will form a solution that conducts electricity?
Oct/Nov 2015
What negative ions are present in aqueous copper(II) sulfate?
Oct/Nov 2015
No precipitate is produced when aqueous solutions of different chemicals are combined.
Oct/Nov 2015
The formula of an ionic compound is $XY$, and $Y$ is a non-metal. Which statement correctly describes $XY$?
Oct/Nov 2016
The table gives some properties of four metal chlorides. Which row is magnesium chloride?
Oct/Nov 2016
An element, $Z$, in Group II of the Periodic Table combines with chlorine, an element in Group VII. What is the formula of the ionic compound that is produced?
Oct/Nov 2016
Which diagram accurately represents how the ions are arranged in solid sodium chloride?
Oct/Nov 2016
Which of the following statements about chlorine atoms and chloride ions is correct?
Oct/Nov 2016
Which diagram correctly represents how the ions are arranged in solid sodium chloride?
Oct/Nov 2016
The table displays some properties of four metal chlorides. Which row represents magnesium chloride?
Oct/Nov 2016
Which of the following statements about chlorine atoms and chloride ions is true?
Oct/Nov 2016
Which of the following pairs of compounds, when dissolved in water, will not undergo a reaction to produce a precipitate?
Oct/Nov 2016
Which of the following statements is true for every ionic compound?
Oct/Nov 2017
When a sample of sodium is heated in air, it reacts with oxygen to produce the ionic compound sodium oxide, $\text{Na}_2\text{O}$. In terms of electrons, which statement correctly describes what occurs when sodium reacts with oxygen?
Oct/Nov 2017
X is the element with atomic number 8, and Y is the element with atomic number 19. These two elements combine to make a compound. Which row gives the correct information for the compound produced?
Oct/Nov 2017
Magnesium oxide melts only at a very high temperature, so it is used to line the inside of furnaces that run at high temperatures. Explain why magnesium oxide has such a high melting point.
Oct/Nov 2018
An ionic compound is formed when 1 atom of element X reacts with 2 atoms of element Y. Element X produces a positive ion. Which elements might X and Y be?
Oct/Nov 2018
Magnesium is classed as a metal.
Oct/Nov 2019
Which of the following statements describes ionic bonds?
Oct/Nov 2020
Which statement describes how magnesium atoms are converted into magnesium ions?
Oct/Nov 2020
Which row gives the correct descriptions of the solubilities of both ammonium sulfate and sodium carbonate in water?
Oct/Nov 2020
Which statement gives the best description of ionic bonds?
Oct/Nov 2020
Which statement explains the change from magnesium atoms into magnesium ions?
Oct/Nov 2020
A +3 ion has 20 electrons. Which element did it originate from?
Oct/Nov 2020
Which statement concerning atoms and ions is correct?
Oct/Nov 2021
Select the answer to each question from the chlorides listed below. aluminium chloride ammonium chloride cobalt(II) chloride hydrogen chloride iron(III) chloride potassium chloride silver chloride sodium chloride You may use any chloride once, more than once, or not at all. State which chloride:
Oct/Nov 2021
Elements X and Y combine to make compound XY. Element Y has a greater number of electrons in its outer shell than element X. In the molten state, compound XY allows electricity to pass through it. Which row correctly gives the electron transfer that takes place during the reaction and the bonding type in compound XY?
Oct/Nov 2022
The formula for ammonium metavanadate is $\text{NH}_4\text{VO}_3$. It is made up of $\text{NH}_4$ ions and $\text{VO}_3$ ions. What charges do these ions have?
Oct/Nov 2022
Which of the following statements about iodine atoms and iodide ions is correct?
Oct/Nov 2022
Which statement concerning iodine atoms and iodide ions is correct?
Oct/Nov 2022
The table shows data for four substances. Which substance is an ionic compound?
Oct/Nov 2022
An ionic compound is represented by the formula $\text{Al}_2\text{O}_3$. What charges do the ions carry?
Oct/Nov 2022
Which diagram represents a section of the ionic lattice in sodium chloride?
Oct/Nov 2023
The table shows some details about barium and chlorine. On the basis of this information alone, a student makes three statements. Which of these statements are correct?
Oct/Nov 2024
When metals react with a non-metal to make an ionic compound, they lose electrons. Calcium reacts with hydrogen to produce the ionic compound calcium hydride, $\mathrm{CaH_2}$. How many electrons are in the outer shell of each of the two hydride ions in $\mathrm{CaH_2}$?
Oct/Nov 2025
Which ionic compound contains ions that all have the same electronic configuration?
Oct/Nov 2025
Which ion carries a positive charge?
Oct/Nov 2025
Hydrated zinc chloride takes the form of a white solid.
Oct/Nov 2025